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dump: dump user namespaces (v2)

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For that we need to save per-namespace mappings of user and group IDs.

And all id-s for tasks and files are saved from the target user
namespace.

v2: move code into collect_namespaces()
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin
2014-11-07 13:56:34 +03:00
committed by Pavel Emelyanov
parent 30711b109d
commit cb2f9223a0
3 changed files with 164 additions and 9 deletions
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4
include/namespaces.h
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@@ -63,7 +63,11 @@ extern struct ns_id *rst_new_ns_id(unsigned int id, pid_t pid, struct ns_desc *n
extern int rst_add_ns_id(unsigned int id, pid_t pid, struct ns_desc *nd);
extern struct ns_id *lookup_ns_by_id(unsigned int id, struct ns_desc *nd);
extern int collect_user_namespaces(bool for_dump);
extern int prepare_userns(struct pstree_item *item);
extern int userns_uid(int uid);
extern int userns_gid(int gid);
extern int dump_user_ns(pid_t pid, int ns_id);
extern void free_userns_maps(void);
#endif /* __CR_NS_H__ */